Deep well pump



June 28, 1932. F. c. KNISS ET AL DEEP WELL PUMP Filed March 12, 1931 fijwue/wtow I C. kitelsfi. 1?. ill. P imers.

0| i ur Patented June 28, 1932 UNITED STATES PATENT OFFICE FRANK C. KNISS AND RICHARD N. VICKERS, OF SMAGKOVER, ARKANSAS DEEP 'WEIIL PUMP Serial No. 622,032.

This invention has for its object the prowell. The external diameters of the nozzle vision of a deep well pump in which the valves will be disposed in such close relation that the chances of sand being deposited between the valves will be minimized and practically eliminated. Another object of the invention is to provide a novel construction whereby the inflowing liquid will be positively driven to the mouth of the well, and which will facilitate the drawing of the working parts of the pump from the well casing without necessitating the lifting of the casing.

These stated objects, and other objects which will incidentally I pear in the course of the following description, are attained in such a structure as is illustrated in the accompanying drawing, and the invention resides in certam novel features which will be particularly defined in the claims.

In the drawing,

Figure 1 is a vertical diametrical section of the working parts of a pump embodying the inventio and Fig. 2 is an enlarged detail section on the line 2-2 of Fig. 1.

The well casing is indicated at 1 and may be of any approved dimensions. To the lower end of the casing 1 is connected a sleeve 2, and to the lower end of this sleeve is connected a coupling sleeve 3, a short sleeve or tube 4 being connected to the lower end of the coupling sleeve 3, a strainer 5 being carried by the lower end of the tube 4, if desired and as shown in Fig. 1. The connections between the several sleeves and tube are threaded joints, as shown in the drawing. whereby the parts may be very easily assembled and disassembled, as occasion may require.

Resting on the upper end of the lower tube 4 is a standing valve nozzle 6, the lower end of which is tapered whereby it may readily enter and seat upon the upper end of the tube 4, as clearly shown. This nozzle has a ring 7 permanently fitted in the upper end of its bore to constitute a seat for the standing ball valve 8, and threaded onto the upper end of the nozzle is a cage 9 consisting of a short tube or sleeve having ports- 10 formed through its wall to permit circulation of the liquid being drawn from the 6 and of the cage 9 are the same and are less than the internal diameter of the coupling sleeve 3, whereby a space is defined between the sleeve and the cage and nozzle to permit the liquid to rise, as will presently more fully appear. In the upper end of the cage 9 is secured a ring 11, the external diameter of which is equal to the external v diameter of the cage, and in the upper end of this ring is fixed a collar 12 constituting a double valve seat, the valve 8 seating against the under side of the collar at certain stages of the operation of the pump, and the ball valve '13 seating in the upper side of the o collar, as shown. Fitted to the upper end of the ring 11 is a tube 14, the external diameter of which is the same as that of the ring 11 and approximately equal to the internal diameter of the sleeve 2 so that the upper end of this tube or shell 14 will fit snugly within said sleeve 2, as shown in Fig. 1. The tube 14 is constructed with a diametrically disposed bridging member 15 which constitutes a stop to limit the upward movement 7 of the ball valve 13, and also defines a circular passage 16 across the tube. From the upper side of-this bridging tube 15 a cylinder 17 rises in concentric relation to the tube 14 and spaced from the inner wall of the 30 same whereby an annular space 18 is provided communicating directly with the interior of the casing 1. The cylinder 17 extends above the up er end of the outer tube 14 and preferably a ove the upper end of the 35 sleeve 2, and is threaded both externally and internally, as clearly shown in Fig. 1. Threaded onto the upper extremity of the cylinder is an extension tube or-cylinder 19 which is open ended and is adapted to receive a plunger 20. Said plunger 20 is a solid rod secured in the lower end of a head 21 to which the drill rod, indicated at 22, is attached, and also secured to the lower end of the head 21 is a cylindrical apron 23 which closely encircles the cylinder 19 so as to slide readily thereon, said apron protecting the cylinder and the plunger from the abrasive action of an accumulation of sand. The lower end of the plunger 20 is externally threaded. as shown at 24, so that it may engage the internal threads of the tube 17 when it is desired to draw the pump from the well for the purpose of repairing or readjusting any of the parts.

The construction and arrangement of the several parts of the pump having been made known, it is thought the operation and advantages will be readily understood and appreciated. The standing valve and connected parts are lowered through the casing so that the nozzle 6 will seat in the short tube or ring 4, as shown and as previously stated, the weight of the parts holding them firmly seated so that the proper operation of the pump will not be affected by loose moving parts. It will be observed also that the tube 14, which forms the upper member of the train of parts associated with the valves, fits closely within the sleeve 2 so that it will be frictionally held against movement. The parts being assembled as shown in Fig. 1, the drill rod 22 is reciprocated, and this motion will be transmitted directly to the head 21 and thence to the plunger 20 and apron 23. On the upstroke of the plunger, a partial vacuum will be formed above the valves 8 and 13, and the valve 8 will be unseated by the pressure of the liquid entering through the nozzle 6. The combined suction created by the partial vacuum and pressure of the liquid will cause this valve 8 to impinge against and seat in the under side of the valve seat 12 so that the upward flow of the liquid will be temporarily arrested and the liquid consequently will be diverted through the ports 10 and rise through the annular space between the cage 9 and the coupling tube 3. The upper end of this tube is closed by the lower end of the sleeve 2, and the liquid will, consequently, be caused to enter the tubular bridge 16 and thence rise within the cylinder 17. On the reverse stroke of the plunger, pressure will be exerted by the plunger upon the liquid in the cylinder 17. which will cause it to return through the bridging tube 16 and again flow through the ports 10, but the valve 8 will now be seated by reason of the back pressure exerted by the plunger, and, consequently, the liquid will flow upwardly through the ring 11 and. past the valve seat 12 to unseat the valve 13. and then fiow around the stop member 15 and pass up through the space 18 and the casing to the mouth of the well.

It will be readily noted that the construction is very simple and the valves are brought so close together that there is little likelihood of sand accumulating between the valves. Such sand as may possibly accumulate upon the. valve seat 7 and within the cage 9 will be washed therefrom on the downstroke of the plunger and will then accumulate between the nozzle 6 and the coupling sleeve 3, so that the possibility of the sand accumulating to such an extent as to clog the operation is practically nil. Should there be an appreciable accumulation of sand at the lower end of the coupling tube 3, the plunger ma be lowered so as to enter the upper end 0 the cylinder 17 and then rotated so that it will be connected to the cylinder, whereupon a lifting force applied to the upper end of the drill rod will cause the entire pump to be drawn upwardly through the casing. In

this connection, it will be noted that the outer surfaces of the tube 14, the ring 11, cage 10 and nozzle 16 are flush so that they will pass readily through the sleeve 2 when it is desired to withdraw the parts for examination, repair, cleaning or readjustment. The plunger does not have to enter the cylinder 17 to insure operation of the pump inasmuch as the apron 23 has a close running fit upon the eXtension 19 of the cylinder and, consequently, the desired action will be attained, a partial vacuum being created on the upstroke of the plunger and apron, and pressure being exerted by the plunger and lower end of the head 21 on the downstroke.

Having thus described the invention, we claim:

1. A pump comprising a casing, a sleeve fitted to the lower end of the casing, a coupling tube fitted to the lower end of the sleeve, a tube fitted to the lower end of the coupling tube, the last mentioned tube and the sleeve being disposed within the ends of the coupling tube, a nozzle seating in the uper end of thelower tube, a cage rising from said nozzle, a valve seating on the nozzle, a ring rising from the cage, a double valve seat in the upper end of said ring, a valve normally resting on said seat, an outer tube rising from said ring and fitting frictionally within the sleeve connected with the lower end of the casing, there being an annular space between the coupling tube and the nozzle cage and ring, a hollow bridging member extending diametrically across the last mentioned tube, a cylinder rising from said bridging member in spaced relation to the tube, a plunger, an apron concentric with the plunger and fitting about the cylinder, and means attached to the plunger and the apron for reciprocating the same.

2. A pump comprising a casing, a sleeve fitted to the lower endof the casin a coupling tube fitted to the lower en of the sleeve, a tube fitted to the lower end of the coupling tube, the last mentioned tube and the sleeve bein disposed within the ends of the coupling tube, a nozzle seating in the upper end of the lower tube, a cage rising from said nozzle, a valve seating on the nozzle, a ring rising from the cage, a double valve seat in the upper end of said ring, a valve normally resting on said seat, an outer tube rising from said ring and fitting frictionally within the sleeve connected with the lower end of the casing, there being an annular space between the coupling tube and the nozzle cage and ring, a hollow bridgin member extending diametrically across t e last mentioned tube, a cylinder rising from said bridging member in spaced relation to the tube, a plunger an apron concentric with the plunger and fitting about the cylinder, and means attached to t e plunger and the apron for reciprocating the same, the lower end of the plunger being threaded whereby it may be engaged in the cylinder to effect withdrawal of the several parts through the casing.

In testimony whereof we aflix our slgnatures. Y FRANK C. KNISS. EL. 8.]

RICHARD N. VIOKERS. L. s. 

